I am the head of the Yakumo family, Yakumo Shiro.
I have a sister who is always seventeen years old, Murasaki Yakumo. The above is just the basic situation.
But finally one day, I was kicked out of Gensokyo by my sister. Out of grief and anger, I decided to regain the power of the family leader, build my own harem town, and fight my way back to Gensokyo!
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.